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An SSL certificate identifies the owner of a website and ensures the user that they are visiting the right organization. The SSL protocol secures confidential data, which is sent encrypted between the web and the user: passwords, bank accounts…

We can easily check if the website we are visiting has or not a certificate, just by checking the browser address bar.

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What is SSL?

Secure Sockets Layer (SSL) is a security protocol used by browsers and servers that allows sensitive information to be transmitted securely.
The information is sent and received encrypted, this ensures the transaction (bank details, personal, etc.), reducing fraud. The certifying company authenticates the site or the domain before granting SSL certificate. We work with the best institutions worldwide: Symantec, Thawte, GeoTrust.

There are three forms of validation:

The domain validation is very fast but less secure, since it does not validate the certificate holder. A green padlock appears in the browser.

Validation of organization in which the certifying company validates the domain and organization. A green padlock appears in the browser and the data of the company is exposed in the certificate.

The Domain Validation methods for DV, OV, EV SLL Certificates are:

1. Email-based Authentication: the CA will send an email to the WHOIS registrar email address asking them to verify that they did indeed register for a certificate. The CA can also send the authentication email to one of five pre-approved email addresses associated with the website. The five pre-approved addresses are: (admin@, administrator@, hostmaster@, webmaster@, postmaster@)

2. TXT or CNAME-Based Authenticacion: The CA will provide with a code that you must enter in your DNS record. Then, the CA will use it to validate the domain.

3. HTTP/Server web Authentication: The CA will provide with a code that you must upload to the root directory of your website. Then, the CA will use it to validate the domain.

The Extended Validation SSL (EV). This validation is more strict and takes longer because the certifying companies get in contact with the holder of the certificate to verify that all data is correct. This certificate shows the information of the company and the name of it in the green bar + padlock.

Types of certificates: for a subdomain, Wildcard and SAN

For a subdomain: Ensures a single subdomain.

Wildcard: Secures unlimited subdomains. We refer to it using an asterisk or calling them wildcard « * », eg *.entorno.es

This certificate ensures all pages (subdomains) ending in .entorno.es

SAN or multidomain: Protect multiple domains of the same holder. Each domain is authenticated separately and the organization must prove that they own the domains. Consult prices